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TIMELINE Z 








Volume 2 Issue 3 March 1984 been $1.00 


TIMEX SITUATION REPORT USER GROUP INFORMATION 
COME TO THE FAIRE CARD SHUFFLE ROUTINES 








2068 GRAPHICS EXPLORED SPARE PARTS ORDER FORM 
























rj = i = P= ss = pg prug! tie oe my 
TY SMe See TS Taf So Ure ee cc oe 
bi | H “3 = Pp “hatter | onl ag = 
BUT WEEE -GOoO ON COMPUTER FAIRE. 
in = SuUrerise announcement an Kuchet & oF 
Feb, 22, Timex said it was e Thee s he th 
discontinuing sproductian an alt ue gt the r 
Linés OF its Rame computers, e if: Sar = 
Thit Came af Quite @ Shock tao 9 fRente a See ae a z 
the Bay Ares iiser Gra GUE MEMES. A: Sem ry = 
ESrecisaiiy thase who asttended i = & riches 
the wien. Sao, Bay meeting where Po Sie & cas 
iformer} Timex.UP, Billy Skurme, Four dSus The 
Gave 3 VErYU EMPrEestive presen be Ofer: 
tation fFesturing many excitina 
vecon-to-be-reteased” products There, Mares “Se. "es to Fert 
For the 2865. Mr. Skyrme was Fri. Mere 25, 2e: LoS 
Subsequentiy iet goa by Timex Bat, March ad ig to 08 
aiang with mare than 228 ather Suri March 25 if ra. = 
computer division emp LOYEes . 
o See hardware 3 
C. Michael dacabi, UP aF =: Ch CS 5. -EBips. °c &i and 
Marketing and sates, faid Timex = are wilt &i4 he 
withdrew because af negative = 
Future progjectians cancerning 
the home computer market. He Eric Reiter if 2c 
Said “the ifidustryu if Gon @ Speak at one oF ft 
kamikaze path.” He was Oni Scientifti€ Ps 
comcernéed that Future price riled on a Shoestring 6 
could “cause the value oF ifiven-— shoestring budaet 
tories ta dectiine, making it a TyS TESG. “8? ecoerse 
agifFicult ta make 4 fréeastanabte 
Profit.” -Timex said it would Gur booth wiki F . 
canmtinue to make computers far Club members 3 d i 
other manufacturers. WOU Wish to he e 
please calt Bab t 
Some analysts have ats the “day at (428) j 
speculated that Timex was hurt Witi have sisgn- 
because it had taken Little reqitterinad mew or 
interest in sSupparting its OF THe. cisces. 
users. A Neu Yark Times articie 
guGaites ane camputer aquner as Sete us st the Faire! 
Sauaing, “When you called ta ask 
amy téechnicai questions, their 
attitude was toc damn bad.*” 


Teo Seo 


This same uncooperative attitude 

Was encountered by many of the 

4O8 companies that sell programs 

and peripherat equi et For 

the Timex machines. imex’s > ity ra 
overall philosophy seemed to be Boer eae tan I 
Changing in the last few months, SINCLAIR USER hj 
but apparentiy the damage had SAN FRANCIsca - 

already been dane. AREA. QLO AND N 


MRE ALWAYS YELCOME 

now? AS we HAROCWRRE, SOFTWRRE . 
anly been & COMPUTER BEGINNERS. 
nce the : AT THE NEXT MEETING. 
“8G far, we 
any other 

bly taking aver 
tian afF the 
imex. If anyone 


(CONT. ON BACK PAGE) [17] 


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IMELINE= 





A BOOK REWVIEL by Welt Gaby 


0 a. 
r 
D 
1h 


White the Teri 2868 has orniy beer 
on the market for a Short time, 
there sre already 3B books avaii-c 
abie wikich relat to this comeu- 
Lof Th SUBVEC of this review 
if & book e€rititte 

I 

sk 


PHICS: 


THz Mm imal om iT 


or 
3 
Ba) 
ing 
+. 
se 
~y 
m 


ik Company 
ark, Neil. 


09 


FLthough unimportant, there are 
S&S Couple of things Which reflect 
the rush af publishing this daoc- 
umemt: 13) the cover features a 
Ficture of the TrS 2848! and (2) 
the text uses the word “calour 
threughaut indicating that the 
book if &@ Quick re-write of one 
for the Spectrum). 
TRe contents af this book, not 
SUrPrizingiu, can be Summarized 
from its table of contents 

Ceoiaur Plotting 

High Fesctlution Graphics 

Srarph Platting 

WEing the Uidea Memary 

Scaling and Stretching 

Roteting end Moving 

SD Displays 
TRE bOGkR contains a total of 45 
Programs, Each if accompanied buy 
a Sumnsary of the program struc- 
ture and an xample of the aut- 
PUT, . 


a 
it 


am 


e+ et D ot eT 


€ 


tote gee ON 
in 


a sl oy ay 
pes pat een ha 
MCD Wim me 


bt “ in C— me ft 
“IT Qe IN treat im 


OF ee AD IT ae 
1D rr Ld TT pm t- 
22 WN 
We i“) Qe 


i= Quy 
SUCK as 
Put is 


ee 
eA Moro 


JQe NY LAM A 


ry tf) 


th 
at 
n 
= 
nt] 


For those who 

developing ekki 
techniques tbe 
Frovidéed in th 
thig book i 


Somee® 
‘eo 


Af an example of the technical 
quality Of this book, there fai- 
tows &@ VWEry nice Little program 

Which takes the drudgery aut «a 
peel ene user-defined charac- 
ers. 


But fF 
itsel 


~ 


oo Et, & Copy of the screen 





PRODUCING GRAPHICS ON THE 2068 








CHARACTER NUMBER 
Ex TESTING 


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23 
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2 
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| USE arRous To MOVE CURSOR [4] | 
i i 
| PRESS: "A" TO ADD A PIXEL 
"D' TO DELETE A PIXEL | 
| “N' FOR NEW CHARACTER | 
T 
i 





Fu omoving the cursor end kitting 
A igdd: ar BD idélete!,. one can 
dEfzignm = 2pEeciat character in: 
the Bx grid af 64 bits. An =o 
ceuses the 29uaerée tao became dark 
pblué and = “DR makes it white 
#2GSin. FE you design. the cher- 
ecter sisa evoives fat iti mor- 
mal S376) iff &B pete to the Lert 
Sf-Ahe ‘grid. tFor what it meu be 
worth, the display aieta presente 
the decimei vetivue of €8Ch aF the 
fGighnt butes.} 

tip to £2 f€parate characters can 
be aeligned. TRESE Charecters 
aré therm eveilabpie, through the 
Graphics mode BY vsting Letters 
A through Li, 

With minor exceptions, the Fra- 
Gran presented is Hampthiréet: 
Iheve 217RP Ly Made it & bit more 
Friénaiy fLinés 8180-870) ana 
have Erovided an Exit  t(lines 298 
and 2820:. 












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LAsREM 4S SESHSESEEHEXSEE TEE 
2A REM = CHARACTER ECITOR ¥ 
SQ REM + BY NICK HAMPSHIRE * 
48 REM + Fram. + 
SQ REM + Tri COLOR GRAPHICS + 
EA REM £F4 Sete tFFEESEHEEEEESHE 
7@ INF @ 
BQ PAPER F 
L140 LET -%230: LET Yes 
1185 CIM C18! 
122°: CLS : GO SUB 1000 
ise PRINT AT &,6;" a 
125 FRINT AT 17,5; "INPUT CHARAC 
TER NUMBER" 
re PRINT AT 18,9; "(FROM 1 TO 2 
. : 
JEQ@ INPUT ¢ 
155 IF fii GR C321 THEN GO TO 1 
58 ; 
368 CLE 
178 Ga SUE ie8@a 
188:60 SUB Fae 
1508 Go Ta 448 
Zi IF INKEY$="" THEN GO TO 218 
245... 67 XGSx* Leto aie, 
220 IF IHKEY$="A" THEN GO Ta 5a 
[a 
23Q@ IF INKEY$="D" THEN GO TO 68 
@ 
240 IF INKEY$="5" THEN LET x=x- 
4:--¢GO TO See 
25@ IF INKEY$="6" THEN LET Y=¥+ 
i: Go To 3ee 
zea IF INKEYS$="?' THEN LET Yev¥- 
1: 6 TO 3ae 
Bra IF INKEY$="6" THEN LET x=x+ 
4: GO TO 30 
S2Q IF INKEYS$="N" THEN GO TO 18 
e 
aa IF INKEYS$="E" THEN GO TO 20 
e 
225 G2 TO 28e 
3S4Q IF x*<18@ THEN LET x=18 
3DQ:IF X>17 THEN LET xX=2=17 
Ss0. IF <6 THEN LET Y=6 
S40 IF ¥;:13 THEN LET Y=1s 
410 LET xC=sxOee: LET YC=t2ei1-y0) 
+3 





420 PLOT INVERSE 1; xC+2,7¥C4+4 
425 DRAW INVERSE 2a 

43Q@ PLOT INUERSE 1; XC+4,7YC+e2 
425 DRAL INVERSE 1; @,4 

440 LET xXC=X<8: LET ¥Csxi21i-¥) +6 
45@ PLOT xC¢+2,yYC+4 

460 DRAW 4,2 

47@ PLOT xXC4+4,YC+2 

48@ CORAL @,4¢ 

49@ GO TO 222 

Sie@ LET Ge X+2e526+ (32 Yi) 

Sia IF PEEK (6)}51@ THEN GO TO 2 


Bo 
oe IF PEEK (6) 28 THEN GO TO 28 
S42 POKE @,12 


55Q@ LET P= 
S6@>60 SUE 982 


S72 Go To 208 

61le@ L O=KX4+l225238+ (32¢y¥) 

Bee IF PEEK (@) =<56 THEN GO TO é2 
a 

630@ FORE @,56 

642 LET P= 

65@ GO SUB sag 

6608 GO TO 202 


1 OY COMIC dad mdd dnddd 


3@ FOR G=64 TO 128 STEP & 
is PLOT &@,6 
2@ DRA 64,2 
eS NEXT G 
BG FOR G82 TO 144 ETEFP SA 
35 PLOT 6,64 
4@ DRAW @,64 
45 NEXT G 
5Q@ FOR @=1 TO & 
SS PRINT AT @4+5,280;0 003 
6@ WEST G 
a 
5: 
e 


PRINT AT 1,2; “SEER 

Si PRINT as 

22 PRINT AT 3712; "EXISTING sy" 
BEQL: "CHR {1434C) 

S30GQ PRINT AT 17,2; "PRESS an 
To ADR A PIXEL" 

@4@ PRINT AT 18,93; "°""D' To GEL 
ETE PIXE. 

S58 PRINT AT 15,2; "USE ARROUS T 
O MOUE CURSOR [4] ' 

e6e8 PRIN iT AT 19,8;°°"N" FOR HE 
Li CHARACTER” 

S7@Q PRINT AT 28@,9;"°"°"E ae A 
i 

SHAQ FRINT AT 5,5;CHR$ (14340: 
S30 RETURN 

O1Q@ LET xUs?7-(x-18) 

S45 LET Z=2txv 

G20 LET Uey-5 

O25 IF Fa=i THEN GO TO 842 

$30 LET. Civ) =C (VU) 42 

G35 Go To s45 

Q4@ LET Cis =Ciy -Z 

G45:FOR @=1 Ta & 

OS@ PRINT AT &4+5,28; ; 

O55 PRINT AT @45,280;0 16 

G6G HEST @ 

G65 LET 2sU5F CHR$ (14340) 

Oo708 FOR G=1 To & 

O7S FORE 84:15-1).,000) 

Q8@ WEST @ 

S65 PRINT AT ©,5;CHRS (14340: 
S3@ RETURN 
1@i@ PLOT @,8 
1820 CRAL 255,28 
1Q82a DRAW @,175 
1048 CRA -255,.8 
1aS5@ CAL @,-175 
1060 RETURN 
2000 CLS wie! 





FWP SLE 


Word Processing For your TINEx 
2068 computer r204¢0 printer. 


FEATURES: Headlines, 
FULL Screen editor 


At your dealer or: 


Bob Orrfelt 
3436 Bay Road. -. 
Redwood City,Ca 94865 


Price: 





[MEL HES CARD SHUFFLE ROUTINE FOR GAMES 20 
fann_sanes 1s Fast “4 
20 GOSUE i900 FIG. 1 
BY: WILLIAM GORDON eo Utt Seisse 
38 FUR hel To Ss 
wo £1: Sethe scat FO 23 
Card games are interesting programming 40 LET Cgecgis TO 
projects, but the random selection of ee ee 
cards (shuffling the deck), can be SS 37 
difficult. Assigning a card name of Or eas 
value to a random number between one borate 


and fifty-two is simple, but checking 
for duplicate selection can be costly 
in memory usage, and can require long 
execution times, especially if a full 
fifty-two cards are to be used. 


The following subroutine in very eco- 
nomical in both memory and execution 
time. It occupies only 292 bytes af 
program space, and will completely 
randomize 32 card games in Jjust over 
three seconds in "fast mode". I fewer 
cards are needed, the routine runs even 
faster. 


Line 1008 sets up a string A$, con- 
taining all 52 possible cards (Figure 
1). Inverse characters are used for 
spades and clubs for clarity. Note the 
use of the letter T to represent 16. 
Line 1663 initializes C8 where the 
results will be stored in memory loc- 
ation 1810, and can be altered for the 
number of cards needed for the game to 
be programmed. The remaining lines 
pick a two-byte card representation 
from AS at random and store them in CS. 
Those two-bytes are then truncated from 
A% and the routine loops back for an- 
other selection. The final result is a 
string C6 containing, in random order, 
the representation for a series of 
cards up to the nuaber specified in 
Tine 1616. 


1¢ RAM space is critical for execution 

of your program, additional space in 

the variables section may be gained by 

adding 1635 let A@=’’’’. This is effec- 
tive only if your game routine uses 

less than the full deck. If all 532 

cards are used, then AS has already 

been fully collapsed by the routine. 


Cards can now be used by taking two 
byte slices out of C6, as illustrated 
in Figures 2 and 3. 










BI an article, review, 






pear 
fee me ee et 








i965. LE “S$ 
1@i@ FOR W=1 Ta Se 
1015 LET Cel+INT (RNDslEnN Agee) 
14826 LET C$=C$+ASteeC-1 TO 240) 
1Bet LET AsS=AG: TO H¢0-2) +A$ (240 
41 To i 
1620 NEST 
1935 LET Ag="" 
1040 FETURN 
case nc aS a cE A OT 
ae RARE 
5 FAST 
2@ GOSUE lace FIG. 2 
25 DIM BRis.e2 
SO FOR N=3-.70 6 
40 LET BSthii =C#lSe4eH-1 TO Bethii 
45 PRINT Bpitse sg ", 
SO WE*#T 
$5 STOP 
Le00@ LET 
TAK HEHE 
(OSL 
ent 
eT 
ti 





14@1a FOR : m Se 

e EET =1l¢+INT (RNDS¢lEW Ages) 
10826 LET BeOCK$tAHFiSeC-1 TO 240) 
Jass LET BoRGi TG S40-Si +A ifec 


i} rT 
ote 
18e5 LE 

: al 


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HPP HI SHIH HHH SHH HOH HH OH IH HHH HHH E 
TIMNELINEZ is your news- = 
letter. It will be as =) 
good as you make it. =) 
How about contributing 






ee 
—) 
Vas 
ne, 









Letter or whatever? 


If you purchase an item 
advertised in TIMELINEZ 
please tet the sponsor 

know where you found 
his ad. THANKS 








cm 


—. 
a, 


NIMELI ME2 Sau Area User Grove 


Information 























East Ba Z80 Oo Us r's PISA CEL BRODY 
} e Grou ae ERE: ace LINK 

WEST BRANCH OF Bae ce. MEPHEeTers 

RY; WOoOoCy MCPRH = 

THE BERKELEY _TBRARIAN . Miitetens MCPHEETERS 





/ PUBLIC LIBRARY TEMEL INES 


mn 


TCK 


CONCERNING 
SENT TO: 


LINK 


- 1M 


MEETINGS BEGIN 7:30 PM 
NEXT MEETING —- MAR. 13 


Pope age ARE Sie ON THE SRD 
OF =e 

























MEET. ROOMS ARE ON LOWER FLOOR. 


ELECTRICAL OUTLETS AND TABLES 
ARE AVAILABLE SO BRING YOUR 
EQUIP. AND EXTENSION CORDS IF 
POSSIBLE. 


MEMBERSHIP SCHEDULE: 


FULL (NEVSLETTER AND 
LIBRARY PRIVILEGES) $15/YR 


PARTIAL (NEWSLETTER ONLY! $1@/YR 
FOR MORE INFORHATION CONTACT: 


GEORGE MOCKRIDGE 
263 GATEWAY NO. 107 
PACIFICA, CA 94044 
(415) 359-3198 


SEND NEWSLETTER CONTRIBUTIONS: 


FRANK MOURA 
8583 CHENERY ST. 

SAN prigee ace £ CA. 94131 
(415: 333-223 

























PEN. HOSPITAL 
4783 EL CAMINO 
BURL INGAME 










The next SB meeting will be 
Tuesday, Mar. 27, 1984 at 
7 PM at Dysan Corporation 
Headquarters, 5281 Patrick 
Henry Dr, Santa Clara. 








For Information contact 


sawacnde goon sowae 


SBAZUG President > Rita Carr 
c/o TIMELINEZ 
Box 1312 
Pacifica CA 94844 
(468) 738-2888 x4579 




















wep THE FOLLOWING INFO. WAS GATHERED BEFORE TIMEX STOPPED SALES. 
*_ TIMELINEZ WAS TOLD THAT THE REPAIR FACILITIES WOULD STAY OPEN 


IMELINME 


If you feel that your system requires repairs, please proceed as follows: 


1. Call our toll-free “hot-line" 1-800-24-TIMEX to confirm the need 
for repair. 


2. If the Technical Support Representative instructs you to return 
the system for repair, please mail your computer to: 


TIMEX Product Service Center 
Building 19 
Adams Field 
Little Rock, Arkansas 72203 


Please be sure to enclose a letter which outlines the problem (as 
specifically as possible), with your name/address/zip code/telephone number/ 
serial number. We also recommend that you insure your computer to protect 
it against shipment-related damage or loss. 


To purchase extra support hardware, or replacement parts, please fill out 
the enclosed form as indicated and send to: Timex Product Service Center, 
Building #19, Adams Field, Little Rock, Arkansas 72203. 


TIMEX COMPUTER CORPORATION 
PIECE PART ORVER FORM 


NAME : PLEASE SEND TO: 




















































































































WO Se ge ees ee “LITTLE ROck PRODUCT SERVICE CENTER 
a: oe Oe Ue BUILDING #19 - ADAMS FIELD 
Vk oo ee LITTLE ROCK, ARKANSAS 72203 

aril i aaron et OX nese Nag ag Le SE gee ne 
C.P.U. Is 12.00 |340-8)090) |_| IRESISTOR 18K is 3.00 |330-B)0014l _| JUSER MANUAL Is 7.50 |330-011008 |__ 
U.L.A. ! 12.00 {330-885585/_| IRESISTOR. 560 ! 3.00 1330-8115031_| (GAME TV SWITCH 2.95 1330-01002 1__ 
R.O.M. ! 12.00 {330-8108531 _ |RESISTOR 270 ! 3.00 {330-sholnit_| | SCHEMATICS ! 2.50 1330-870503-1]_ 
2kS-RAM ! 10.00 1330-8115181_| IRESISTOR 10 3.00 |330-811506|_| [isk Ras pants) | | 
ODULATOR ! 9.00 {330-8115081_| | CAPAC LTOR GLASS se. 3.00 {330-e10v011_| ID-AMA ! 6.00 1331-812009 1 
KEYBOARD j__7.50 {330-811818)_| ICAPAC LTOR GLASS _10N. |_3:00 |390-Blo1021_} in¢-0¢ TRANSFORMER ! 6.00 |331-819010 | 
ICASE_ASSEMBLY | 7.50 |330-9888541_ LCAPAC LTOR GLASS 7m. 3.00 {330-8101031_| ICASE ASSEMBLY 5.00 1331-55585 |__ 
ESISTOR 407 |___ 3.00 _|330-810001|__| {CAPACITOR ELEC. Sov_|__ 3.00 [230-2011 |__| {1.C. DATA SELECT | 6.00 133)-B1201 1 
RESISTOR 680 3.00 {330-s10003|_| |capActTon ELEC. 16V 3.00 |330-810152|__ | f1.C. ASC BINARY cr | 6.00 1331-812010 |. 
RESISTOR 10K 3.00 {330-s100081__| {capaci Ton ELEC. 1000. | 3.00 |330-8101531_| J1.C. QUAD INPUT 6.00 133)-612012 1 
RESISTOR 2.2K | 3.00 {330-810005|_| | CAPACITOR GLASS am.F| 3.00 {330-8115001 _| lhc. QUAD _INP.& aAte| 6.00 1331-812013 |_ 
RESISTOR _1K | 3.00 ism-s1ooel_| lapacton CER.470°.F | 3.00 [a-enisan}_| zz CONNECTOR 7.50 {331-615020 = 
ESISTOR 1M | 3.00 1330-10007 _| LTRANS LSTOR | 3.00 |330-810751 | [SES ZTX TRAN. BASE | 3.00 1391-819020 1__ 
RESISTOR 220K 3.00 {330-810008 |_| | Jack 3.00 1330-s108011_| {Seven cs - 2.50 1391-870804-1|_ 
RESISTOR 330 3.00 |330-810009|_| |PoweR SUPPLY 6.95 |330-017003}_| jrRtntes PAPER 7.95 1332-09602 _ |__ 
ESISTOR 4.7%K _|_‘ 3.00 |330-e100101 _| JOUAL AUDIO CABLE {__ 4.95 1330-01108 _| ; — 
ESISTOR 220 3.00 |s30-s100111_| coax CABLE 4.95 |330-011005| _| { i ee os 
4702e 


scenes semen te A EE 


MORE 2068 GRAPHICS HELP 


AMELIE 


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*** ANNOUNCING*** 
THE MACHINE-LANGUAGE 
DEMYSTIFICATION CLASS 


The purpose of this class is to 


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IMELIMES 


Things I’ve Tried 

Usually the products I write about 
in this column are picked from a stack 
of press releases sent each month to 
DDJ. { rarely have the product in front 
of me when writing about it, and de- 
scriptions here are not intended to be 
endorsements. 


Once in a while I do get the oppor- 
tunity to try out products, and I'd like 
to share a few with you. 


You may have gathered from pre- 
vious columns that I like inexpensive 
computers, particularly the Timex 
products. One of the wonderful things 
you can do with a TS1000 or 1500 is 
learn Z80 assembly language. BASIC 
on a Timex runs achingly slow, partic- 
ularly since some 60% of the micro- 
processor’s time is spent updating the 
screen. Machine code programs, how- 
ever, run literally hundreds of times as 
fast as BASIC ones. Several good 
books have been written about machine 
code programming on the TS1000. 
The best of these are two by Dr. Jan 
Logan, whose knowledge of the ZX80 
and 81 (predecessors of the TS1000) 
is exceeded only by that of Clive Sin- 
clair (inventor of these and the Spec- 
trum, a version of which should now 
be available, modified by Timex and 
called the 2068). 


You cannot write effective code 
for these little wonders without know- 
ing the entry points for the various 
system variables. Melbourne House, an 
international publishing company, has 
Dr. Logan*s Understanding Your ZX8] 
ROM, $14.95, and The Complete 
TS 1000 /Sinclair ZX81 ROM Disassem- 
bly, $19.95, and their own apparently 
authorless Machine Language Program- 
ming Made Simple for Your Sinclair & 
Timex TS1000, $14.95. I have all three 
of these, and they are excellent. Mel- 
bourne also offers Not Only 30 Pro- 
grams for the Sinclair ZX81, $9.95, 
program listings that ingeniously all 
run in the “‘unexpanded” TS1000 (2K 
RAM), and what appears to be the 
ultimate hardware manual for the two 
“simpler” machines, The Ins and Outs 
of the Timex TS1000 & ZX81, by Don 
Thomasson, $12.95. Add $2 for p.&h., 
and residents of California, Maryland, 
and Tennessee add sales tax. Melbourne 
carries software and books for Timex, 
TRS80, Vic 20, and Commodore 64. 
They will send you a free catalog and 
are looking for contributions from 
authors. 

Far better than hand-assembling 
your machine code programs and then 
trying to POKE them into various 
memory locations is to use an assem- 
bler. International Publishing & Soft- 
ware Inc. offers ZX Assembler. It has 





The following article by Michael Wiesenberg is reproduced with 
permission from the December 1983 issue of Dr. Dobb's Journal. 


its own éditor. You write programs 
using standard Z80 mnemonics. No 
need to figure jump addresses; just use 
labels and the assembler figures them 
for you. Programs assemble in seconds 
and execute either directly from ZX 
Assembler’s monitor mode or from a 
program that executes with a USR 
statement where the code is in a REM 
statement created by the assembler. 
The assembler also retains the source 
code in a second REM statement. 

You can SAVE the entire program 
on tape, and alter, modify, and reassem- 
ble it. Those familiar with machine code 
on the TS will appreciate this method, 
because code loaded in other areas is 
either difficult to save or cannot use 
relative addressing. In the monitor 
mode you can move whole blocks of 
code from one memory location to 
another, examine and modify any loca- 
tion of RAM, inspect and modify regis- 
ters, and search the entire memory for 
any byte sequence. ZX Assembler costs 
$14.95. Internationa! Publishing pro- 
vides a free catalog and the name of 
the nearest dealer that handles this and 
other useful products, including ZX 
Bug, $14.95, for debugging, editing, 
and running machine codes, Toolkit, 
$14.95, to add nine powerful com- 
mands, including a renumber that 
changes all GOTO and GOSUB refer- 
ences, Fastload, $19.95, to load any 
program four to six times as fast, ZX 
Forth, $29.95, for the ease of BASIC 
with machine code speed, and a stack 
of clever games. 

If | knew that a product did not 
live up to its claims, I would not list it 
here. Usually I have no way of knowing 
that, because I just go by the press re- 
leases, which, naturally, are never unfa- 
vorable. Such was the case with Memo- 
tech, whose various memory modules 
and auxiliary keyboard for the TS1000 
I cited a few months back. I believed 
their hype myself and shortly after- 
ward bought their keyboard and 32K 
memory for my system. That first 32K 
memory didn’t work at all, and I took 
it back to the store. The replacement 
32K refused to work in conjunction 
with either Memotech’s keybuard or 
the Timex printer. This was not much 
use to me since I needed the printer 
for listings during program develop- 
ment. I took my entire system to the 
store, and they could get the 32K 
memory and auxiliary keyboard to 
work with their systems only separate- 
ly, not together. 

I called Memotech several times 
for help, and they kept insisting that 
they had tested a sctup identical to 
mine with no problems. Finally they 
agreed to look at my system if I would 
send it tothem and, if either of their 


products was defective, to replace or 
fix it. I called them when the system 
was in their hands, and the technician 
to whom IJ spoke said he had set up 
my system and it had been running 
perfectly for ten minutes, and he 
could find nothing wrong with it. But 
while I] was on the phone with him he 
said, **Wait a minute. It's failing.” He 
conceded that there ‘“‘might” be a 
problem with the memory module, 
which Memotech replaced. They then 
sent back my system. 


When the system returned, again | 
could make the 32K memory work by 
itself only, not together with either the 
Timex printer or Memotech’s keyboard. 
The keyboard, too, only worked by 
itself. The store from which ] bought 
the memory unit was kind enough to 
take it back in exchange for a Timex 

16K memory (and even refunded the 
difference in price!), with which I 
have had no problems. J sent the key- 
board back to Memotech, requesting 
a refund, citing the ‘free ten-day trial 
period” clause in their warranty, stat- 
ing that, while the ten days had elapsed 
all the problems had begun the instant 
] began using the keyboard and that I 
had been in contact with them right 
from the start. They refused to give 
me 8 refund, claiming that the refund 
applied only to those who had pur- 
chased directly from them, but instead 
returned a replacement for my key- 
board. If I wanted a refund, they told 
me, I would have to get it where I 
bought the keyboard. 

The store, of course, did not want 
to give me a refund, because the 1500 
would soon be released with its “‘real”’ 
keyboard, and auxiliary keyboards for 
Timex computers would soon be obso- 
lete. They said that I should contact 
Memotech for a refund. (My guess is 
that Memotech is stuck with a ware- 
house full of these useless keyboards.) 
As I expected, the replacement worked 
no better than the original. At this 
point I no longer had their 32K mem- 
oty, but the keyboard worked with 
neither Timex’s printer nor the 16K 
memory. 

By this time I had heard from the 
South Bay Area Timex/Sinclair Users’ 
Group (mentioned in my October 
column) that Memotech was offering a 
free “modification” to purchasers of 
their 32K memories. It seems several 
other people had discovered that their 
memories did not work with Timex 
printers. Yet all the time I had been in 
communication with Memotech they 
insisted there was no incompatibility 
between their products and Timex 


(CONT. NBXT PAGE) 


ciate ain acreage AeA A NE 





IMELI MES 











(CONT. FROM PAGS 24) 


printers; furthermore, they had never 
heard of anyone having any problems 
like mine. Alrogether, J went through 
three 32K memory modules and two 
keyboards without finding even onc I 
could use. 

Now Dr. Dobb’s has received a 
press pack announcing Memotech’s 
$595 MTX-$12 World Class Comput- 
er™M. It has a Z80A 4MHz processor 
with 80K standard RAM (expandable 
to 512K; 16K is dedicated to video). 
Among other things, it comes with 
Oxford BASIC and a language called 
NODDY, a real time clock, and a 79- 
key keyboard. I hope this product is 
better than the peripherals I couldn't 
use, and that others will encounter 
more competent service and better 
support and attitude than I did. I 
know Jl] never get the chance to find 
out. 










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TIMEX 


TIMEX/SINCLAIR FAMILY OF COMPUTERS... 


co ru to CC CE EM aoe kK iL] 
Sueesece 
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COMPLETE SELECTION OF TIMEX/SINCLAIR SOFTWARE 
SUNSET ELECTRONICS 


(415) 665-8330 
2254 Taraval St., San Francisco, CA 94116 
Monday through Saturday 10-6 ° Sunday 10-3 





















IME IME * (CONT. FROM FRONT PAGE) sorteyvT MICRO SYSTEMS (Faster 
a City): Dennis Gonzales caf 

Plans to do this, they will hav eh dae ered ates SE ST tS: SO 
to move fast before public handle Timex products when the 
interest declines and production Nee tee em eR leased et 
Facilities become committed ta eee ee ep tre t 
Gther projects. TIMELINEZ wilt 5 UPR OT eee eee) Pat tS 
monitor the situation closely Page’ t= see ew Lei gees tS oF 
For any new developments, PREC Lea ee eee 
In the meantime, we have Sue PANES Sage tt Cas vt 
contacted a number of parties pp ga Oe NR a ha Spd ec 
to learn of their plans. The NS Ae Seige 2 carne egg oo eel 
Following iT Formation was rai Lity wis bb remain Cpe, 
9athered From this sury 
‘wean ee ae SINCLAIR RESEARCH: TIMELINEZ 
Bey ARES USER SROURS = i 4 re contacted a SGuUrcEe Wi that 
eser arolbe talan, business Ses Seer eet Se 2ee Sheet nee 
usual. IF anything, the support nee he Pign ee greg ee. the 
arid exchange of information coos MST Re ts VB ie, foes OF 
between group members should eee. OUR 7 eee eat ke 
became more important during Lp Ogee epee gee Oh SOME tes 
this period of uncertainty. ere ees eek se ee TO eee “Set 
Rita, Jcel and George ail report te Ee ere Oe ies |. Oar 
that they plan na immediate a cca a ee ee 

ramGES j rot , at . tf Wot wWiasiis Li : r SUQQESTL 
SPONSES 10 Oo OEE Pe aa AP ies that they reconsider their 
SYNC AND TyvS USER MAGAZINES. décision aboyvt TrS support write: 
Sunc reports that they plan to 3 ne 
continue with their bi-monthly sinclair Research sinclar Research 
Format and that ad revenue = o@ Staniford St. OR 6 King’s Parade 
Locks very good sa far. TyvS Suite O88 Cambridge, CBe i 
User still plans to re-enter the Boston, MS @eli4d UK 
market with an April issue, 


a Titn 
1 


Bae a ; TIMELINES: We pian ta publish 
SUNSET ELECTRONICS (San Fran. : this newsletter as long as we 
SUMESEet plans to comtinue support cantinue to receive the support 
For the Timex computer. Jor GF aur readers and advertisers, 
reparts that he hat & Very Large We are particuiarly anxiaus to 
Seiection of Hr and Sel on hand knci your Feelings canternimng 
and he aitc hopes tao purchase these recent devetopments and 
more Products from Timex the Future directicnhesycu think 
inventory at discounted prices, cur groups shou td Roidaw 

Cail For detaiis. 415-665-s3se Flease Let us HS airy Er Gf gc 


, 


: GEQRGE 
MOCKRIOCGE 


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Rachel Catsont 
Meade. 
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RICK LINE 
FRANE MOURA 
TED HELDERMAH 





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